I am not sure I have a lot to say about this presentation, delivered as a keynote at the Symposium on Spatial and Temporal Databases (SSTD ’09) and embedded below, except that I think the visual design of my slides is somewhat improved.

Oh, and also that I tried to introduce the opportunity of social media data to the smart people in the SSTD community. Especially as Twitter is rumored to add location data, we are about to witness a significant new information system with social, spatial and temporal data all at the same time and in a never-before-seen scale. The opportunities are, as you might guess, endless.

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